一朵花中将来发育成果实的是：[ ]
A．子房壁
B．受精卵
C．胚珠
D．子房
D
The notice has been told to everyone _______ a party will be held in the open air tomorrow．
A．whether
B．when
C．where
D．that
淀粉老化的较适宜温度是（）。
A.-20℃
B.4℃
C.60℃
D.80℃
